My current girlfriend and I have been dating exclusively for about 6 months. Starting in late November, early December, things took a turn for the worse with us. We weren't communicating well and I could just sense that something was upsetting her. It was during this time that I began to suspect she may be cheating on me. She eventually confronted me about being neglectful (which I admit is somewhat accurate). We had a long conversation about it, and decided to push through this tough period and give it another try. The last 2-3 months after this have been amazing. We spend the majority of our time together and were getting along great, however in the back of my mind I always had the question whether or not she was unfaithful. So I looked through her text messages, and found out that during our rough patch she was cheating on me with her ex. We had a discussion about it, and she said it was a mistake, and at the time she believed we were about to break up. This, of course, does not excuse her behavior, and she recognized that, just filling in some context from her side. She was completely remorseful, said she would do anything to make it right, even never talking to her ex ever again. The way I viewed the relationship (and still do) is that during this rough patch when she believed we were about to end, she cheated on me, and once she decided she wanted to be with me the cheating stopped (the text messages support this hypothesis and this was her timeline she independently described to me after being confronted). So while I was crushed, and am still dealing with my feelings from the situation, I believe that what we have now is more important than the mistake 2-3 months ago. Our current struggle is that she is upset with me for initially going through her messages. This is a sentiment I can understand, however in this case I think it is a little pathetic to make an issue over an invasion of privacy, when my heart was broken because she cheated on me. My suspicions were confirmed after all, and while I am not proud of the action itself, looking back it seemed necessary to find the truth. Thoughts? Am I in the wrong here?